Choke Canyon Dam

Choke Canyon Dam is founded entirely on Catahoula Formation except for the deeper excavations which encountered the uppermost portion of the underlying Frio Formation. The Frio Formation was encountered in the excavations for the spillway stilling basin and in the area extending from Charley York Creek to the outlet work's stilling basin.

RegionFacilities in Great Plains | Great Plains Home Page
CountyLive Oak
ProjectNueces River
Dam Type
ReservoirChoke Canyon
WatercourseFrio River
Original Construction1981-1982
Modified Construction
National ID NumberTX04415
Hydrologic Unit Code

Structural Height141.96 ft
Hydraulic Height (Normal Operating Depth at Dam)132.38 ft
Top Parapet (Elevation)
Spillway Crest Elevation182.43 ft
Crest Elevation241.14 ft
Crest Length18471.00 ft
Crest Width
Base Width
Volume of Dam Construction Materials
Streambed at Dam Axis127.0 ft
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)220.50 ft
Top of Inactive Conservation Pool (Elevation)150.50 ft
Top of Dead Storage Pool (Elevation)136.38 ft

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation220.5 ft
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation257444 cfs at 232.2 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation541.60 cfs at 212.31 ft
Diversion Capacity at Elevation
Drainage Area15427 sq mi
Hydrometeorological Report (HMR)HMR 51 & 52
Probable Maximum Flood (PMF) Report

Contact Information
TitleArea Office Manager
OrganizationOklahoma-Texas Area Office
Address5316 HWY 290 W, Suite 510
CityAustin, TX 78735-8931
Phone (Office)512 899-4150
Phone (FAX)512 899-4179
OrganizationCity of Corpus Christi
AddressPO Box 9277
CityCorpus Christi, TX 78469
Phone (Office)512 880-3000

Last updated: Apr 02, 2013